I decided today to change lubes in my Star.
I have Kyle's air pressure system, but I'm sure just cranking down the screw would work as well.
I have a heater, so I turn that on. Get it nice and warm. I then take my heat gun and heat up the reservoir; I want the lube to be able to flow well.
After maybe 4 minutes, the heater has warmed the lower extremities of the Star. I then remove the brass screw, and the old lube starts coming out.
I timed it today; 7 minutes from a warm start to cleaned out and new lube in the reservoir.